Coal ditch baffle device

Abstract

The invention discloses a coal ditch baffle device used for sealing a gap coal slot on the lower portion of a coal ditch. The coal ditch baffle device is characterized in that the coal ditch baffle device comprises a track bottom plate and a baffle, wherein the track bottom plate is fixed to an embedded plate which is fixed to one side of the coal ditch and located above the gap coal slot; the baffle is attached to the gap coal slot; and the baffle is in sliding connection with the track bottom plate and moves up and down relative to the track bottom plate so as to open or close the gap coal slot. According to the coal ditch baffle device, the gap coal slot is opened or closed through vertical sliding-rail type movement of the baffle, the effect of sealing the gap coal slot is good, and raising dust, coal scattering and the like are avoided. The coal ditch baffle device has the advantages of being simple in structure, low in mass, small in occupied space, low in equipment manufacturing cost, convenient and fast to install, flexible in opening and closing, durable, convenient to maintain, safe, reliable, wide in application range and the like.

Description

technical field [0001] The invention relates to the technical field of coal conveying system devices in power plants, in particular to a coal ditch baffle device. Background technique [0002] In the coal handling system of thermal power plants, the slot-type coal unloading ditch is a commonly used vehicle unloading process layout form. The specific form is that there is a slot coal slot under the coal ditch, and the impeller coal feeder installed under the coal ditch is from This gap coal chute feeds coal to the belt conveyor. The specific form is that the impeller coal feeder reciprocates along the entire line of the gap coal chute. While walking, the impeller rotates and feeds from the gap coal chute to the belt conveyor below. In order to prevent coal powder spilling and on-site dust when the car is unloading coal or the impeller coal feeder is pulling the material, the gap coal tank generally needs to be closed with a coal ditch baffle. When the impeller coal feeder is ...

AI Technical Summary

Problems solved by technology

[0005] 1. It needs a large turning space, and it can only be used for the impeller coal feeder whose main drive is the lower drive form. Because of the need for turning space, it interferes with the main transmission mechanism of the upper drive impeller coal feeder, so when the impeller coal feeder The gravity flip coal ditch baffle cannot be used when it is in the form of upper transmission

[0006] 2. The installation of the gravity overturning coal ditch baffle is suspended on the side of the coal ditch by the hinge shaft, and the seal with the gap coal tank mainly depends on the gravity torque to make the baffle fit with the gap coal tank side, so a large weight is required to ensure The coal ditch baffle fits closely with the gap coal chute. At the same time, due to the structural limitation of the gravity-reversed coal ditch baffle, no matter how heavy it is, the seal will not be tight. This is because the baffle is suspended on the side of the coal ditch. , relying on the gravitational moment of the baffle plate itself to stick to the side of the coal ditch cap, when a large amount of coal powder or coal lumps flow out of the coal slot in the gap, the baffle plate will swing outward along the hinge, so that the coal powder or coal block spilled

[0007] 3. During the overturning process of the gravity flip coal ditch baffle, the rollers and the opening and closing frame make an S-shaped movement on the space surface, so there are high requirements for the production and use of the opening and closing frame. Once deformed in the process of use, the baffle will be turned over and twisted, the baffle will be separated from the provocation roller during the adjustment rod provocation process, and the baffle will be dropped, and the rod adjustment and provocation roller will be weak, thus damaging the overturning roller of the coal ditch baffle, or even There is a large area of ​​damage to the coal ditch baffle, and when there is a twist, it will also increase the walking burden of the impeller coal feeder and accelerate wear

[0008] 4. Since the arc section of the hoist frame is an S-shaped direction in space, the arc section of the hoist frame needs to be of a certain length. When the impeller coal feeder is in operation, the baffles on the front and rear non-working surfaces are opened more, which causes the front and rear of the impeller to move materials. The coal trough cannot be sealed, causing dust and coal scattering on site

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